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E. L. PERRY.

Gas Tube.

N0. 77,31 4. Patented April 28, 1868.

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EDWARD L, PERRY, OF NEW YORK, NY. Y.-

Letters Patent No, 77,314, dated April 28, 1868.

IMPROVEMENT IN GAS-TUBES.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, EDWARD L. PERRY, of the city, county, andState of New York, have invented new and improved Flexible Gas-Tubing; andI do hereby declare that the following is a full, clear, and exact description thereof, which will enableo'thers skilled in the art to make and use the same, reference being bad to the accompanying drawings forming a part of this specification. v i v p The nature of my invention relates to improvements in impervious flexible gas-tubing, whereby it is designed to provide the same equal in quality and at'a much cheaper rate than any now in use; and it consists in outer flexible tubes, of vuloanized rubber or other flexible materials, provided with one or more interior tubes of strong paper, the latter joined together by gum, glue, or other suitable substance, which will make an impervious seam the rubber tube being rolled up around the paper tube, and the edges joined together in the usual manner, enveloping the said paper tube, and serving as a protector to the same, the latter being impervious to I gas, preventing the escape of the same, as will be more fully described on reference to the accompanying drawings, wherein- Figure lrepresents a section of my improved tube, with the paper tube arranged between a thin inner tube of rubber and a thick outer tube of the same.

- Figure 2 represents a section of the same, showing oneinner tube of paper, and another enclosed between wo rubber tubes and Figure 8 represents a cross-section, and a longitudinal section of the same, showing a paper tube enclosed between a thick inner and a thin outer rubber tube.

Similar letters of reference indicate corresponding parts.

Various efl'orts have been heretofore made to produce flexible gas-tubing to be used for drop-lights, or for conveving gas in places where metallic tubes will not meet the required demand. Such tubes have been made of rub her and grit, the latter being coated with varnish, glue, or other similar gummy substance: They have also been made of twine or cord twisted'and braided together, and also provided with acoating'of gum, var-'- nish, or other like material; but such tubes, when made with sufiicient earetoniake them answer the purpose required, are very expensive, and at best do not retain their impervious quality for any material length of time when in use.

Now, I have found by experiment,,thnt a good quality of paper of any kind is impervious to gas, and when united as described, and combined with flexible rubber tubing for protection against breakage by undue strains,

or by being bent too abruptly, constitutes a very cheap and durable fiexiblegas-tube.

' The manner of combining the paper and rubber tubes may be carried out in various ways, as exhibited in the drawings, where A designates the rubber tubing, and B the'paper tubes.

The most simple form, and perhaps as good as any, may be to enclose a single tube of paper within an outer rubber tubs, but it may sometimes be found useful to duplicate both tubes in one, by placing on the outer side of a rubber tube, which already encloses a paper tube, another paper tube, and cover that again with another rubber tube. But I do not limit myself to any of these various specified arrangements,

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

As a new article of manufacture, imperviousilexible gas-tubing, composed of rubber and paper tubes, substantially as and for the purpose described. I p a v The above specification of my invention signed by me, this 26th day of March,\1868.

I EDWARD L. PERRY. Witnesses:

- J. Anson 'Fnssan, ALEX. F. ROBERTS. 

